Universal bracket



April 12, 1932. '5 1,853,153

UNIVERSAL BRACKET Filed March 15, 1930 2 Sheets-Sheet 1 gwuentoz LfW/5 5K E E L.

April 12, 1932. SKEEL 1,853,153

UNIVERSAL BRACKET Filed March 15, 1950 2 Sheets-Shet. 2

Snow W01 LEI/W5- SKEEL.

TATE-S, PATENT LEWIS SKEEL, OF MEADVILLE, PENNSYLVANIA ice UNIVERSAL BRACKET Application filed March 13, 1930. Serial No. 435,528.

This invention relates to adjustable by which the bracket is attached to a support brackets and more particularly toa universal 7 such as, a lathe, a drill, press or possibly a joint therefor. grinder.

The invention forming the subject of'this The attaching plate is shown to have con- :3 application will be found to be in the nature nection with a universal joint 8 correspondf an improvement on th b k t Shown in ing in construction to the universal joint 9 United States Patent No. 1,423,535 issued except inminor details that will be described. July 25, 1922 to Frank P. Miller, and an im- The Joint 9 provides a universal connectportant feature of the invention resides in g means 91 a pair of more or less similar W the friction means by which the several arms arms E I S l nd 11, the arm 10 being or sections of the bracket are held securely COnneCted t0 the joint 8, while the arm 11 has in'adjusted position against the contrary in- 111 31011 wltha lamp 14 or other arti l fluence of the eight of the lamp 1- other through the ll'lGdlllIll Of EL clamping dGVlCe 16. article carried thereby and vibration incident AS Shown Flgure 27 the universal joint 9 1.3 t th Operation f th hi t hi h th embodies a pair of bearing members 18 joined bracket is applied, it being noted that the by a hank or web. Each bearing member 18 connecting means between the various sec- 13 r ng i pp relation to EL p tions of the bracket allows ofthe adjustment pt l g m mb r 20, the inner face of f th l or th ti l i any di ti which is formed with an annular groove 22 2. ith if f ilit adapted for the reception of separate plain j A f th d ll i t t bj t f and undulated or radially corrugated annuli the inventioii'is to provide a universal joint 24 n P y- AS Shown in Figure which is simple to assemble, durable in use theflnmlll 24 and 26 are snugly received in d l ti l Cheap t n'lanufacture j the associated groove 22 and are held there- Other objects and advantages will be ap-' m y the PP face of the beal'lng parent during the course of the following dee i scription. The plain washer or annulus 24: is prefer- In the accompanying drawings forming a ably of a material, such as fibre, having high part of this application andin which like nufrlctlonal PrOPeTt1eS7 Wh119 the radlally inerals are employed to designatelike parts nlgated annulus 2 a metal having a throughout the Same high degree of flexibility so that the undu- Fi ure 1 is a fragmentary perspectiv i1 lations'thereof will have firm pressure conlustrating an installation of the improved tact with the Opposed Surfaces of the bracket nulus 24: and the bearing member 18. Fig- In Figure 2 is a perspective of an attaching ures t and 5 illustrate that the annular plate embodied in the invent-ion, groove 22 m each bearing member 20 defipes Figure 3 is a detailed Sectional View a central or concentrically located spacing through the attaching plate and associated element 27b5, Whlch pressure on the elements, ally corrugated washer 26 and the Washer 24 Figure 4 is a detailed Sectional View illus is limited so that damage to the various parts tratin the means b which the main arms of of t b as a result of maladjustment" is the br dcket are con ected, g fi mambers 5 and 20 are formed Figure 5 isa roup perspective illustratin W1 Pen m y I 1Sp9se openmgs adagtecl the parts of a joint embodied in the ll'lVeIltlDIi i i g gg i SCre'W bolt Plvot In the drawings whereinfor the purpose i i i j a j g i f i of illustration is shown a preferred embodilly ith" g gtfgi 55; 122]; 3 g d ment of the invention, the numeral 5 desigd a t 34. v as er 'nates an attaching plate having apertured It is important .to observe that the groove ears for the reception of fastening devices 6 s 22 in each bearing member 20 defines a peripheral flange or skirt 36 closely encircling and embracing the associated annuli 24 and 26 and extending about the periphery of the complemental member 18 to not only hold. the members 2 1 and 26 in place but to exclude dust and other foreign matter. In Figure 4, it is clearly illustrated that each peripheral flange 36 is extended beyond the plane of the surface of the associated concentrically disposed spacing eiement 27 so that the flange has the desired overlapping relation with the opposed complemental member 18.

It is believed to be apparent that although only one of the swivel joints of the connec tion 9 have been described, both of the swivel joints constituting such connection may be alike.

The construction illustrated in Figure 3 Will be found to differ from what is shown in Figure 4 only in that the place of oneof the bearing members is taken by the attaching plate 5 which is adapted for connection to a suitable support and which is formed with an annular flange 46 corresponding to the annular flange 36 and embracing the associated member 18.

Particular attention might be directed to the fact that the undulations or radial corrugations of the several annuli 26 embodied in the invention are unbroken so that while ample friction surface is provided between the several annuli and the associated parts, the presence of sharp edges that are likely to bite into the opposed surfaces are avoided. That is to say, the absence of radial incisions or slits in both the annuli 24 and 26 avoids excessive wear on the opposed surfaces and at the same time provides the desired frictional contact between the parts of the assembly.

Also, the absence of radial incisions in the several washers provides for the expeditious adjustment of the arms 10 and. 11 in the several directions in which the same may be moved.

In more specifically adverting to this latter phase of the invention, it is pointed out that the arms may be adjusted in both clock wise and counter-clockwise directions with equal ease and facility. The absence of radial incisions avoids the creation of a ratchet effect that would tend to resist the movement of the arms in one direction and at the same time permit of the uncontrolled shifting of the arms in the other direction.

The various parts of each joint may be assembled in a hi hly convenient and expeditious manner and the previously described contact between the various parts of the device provides the desired friction so that the parts are held in adjusted position against the vibration and strains incident to use.

Having thus described the invention, what is claimed is:

1. In a bracket, the combination of a air of complemental members, one of whic is formed in the inner surface thereof with an annular groove defining a concentrically arranged spacing element, a pair of washers in said groove, one of said washers being radially corrugated for frictional engagement with the other washer and the opposed face of one of the members, and a pressure member joining said complemental members, said spacing element constituting a means to limit pressure on said washers.

2-. In a lamp bracket, :1. pair of complemental members having central openings, a pivot element extending'through said central openings, one of said members being, provided with an annular groove and an annular flange, a pair of washers in said groove and surrounded by said flange, one of said washers being formed with radial corrugations, said annular flange of one of the members being in overlapping relation with the edge of the other member.

3. In a lamp bracket, a pair of complemental members, a pivot element connecting the members, one of the members being provided with an annular groove defining an annular flange and a central spacing element, and a pair of unbroken annuli in said groove, one of said annuli being of a fibrous material and the other being formed with radial cor rugations, said annuli being embraced by and held against spreading said annular flange, said flange of one member being in overlapping relation with the other member to ex elude dust.

4. A hinge joint comprising a air of disk shaped complemental members having bearing surfaces, a pivot element in the form of a screw bolt extending through said comlemental members and having means whereby the same ma be drawn together, one of said members being provided with a countersunk recess defining a peripheral flange, the inner wall of the recess having an annular groove adjacent to the flange, defining a central spacing element, the other of said hearing members being received in said recess and confined by said peripheral flange, a pair of washers in said groove and surrounded by said flange, said central spacing element forming a means to limit pressure on said washers.

In testimony whereof I aflix my signature.

LEWIS SKEEL. 

